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- W2023376035 abstract "The strong curvature found in the Arrhenius plots for self-diffusion in most of the bcc refractory metals has been explained in terms of separate high- and low-temperature mechanisms of diffusion. The low-temperature mechanism appears to be a monovacancy mechanism, but the high-temperature process is not understood. The present experiments have measured the diffusion coefficients of $^{95}mathrm{Nb}$, $^{95}mathrm{Zr}$, and $^{185}mathrm{W}$ in pure niobium, Nb--2 at. % W, Nb--5 at. % W, and Nb--10 at. % W at 2680 K, where 90% of the diffusion occurs by the high-temperature process. The addition of tungsten to niobium equally lessens the diffusion of each of the three isotopes. The dehancements are shown to be due to the overall effect of alloying and not a local interaction effect. Possible mechanisms for mass transport at high temperatures are discussed." @default.
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- W2023376035 date "1986-01-15" @default.
- W2023376035 modified "2023-09-27" @default.
- W2023376035 title "Dehancement of impurity and self-diffusion in niobium by tungsten additions" @default.
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- W2023376035 doi "https://doi.org/10.1103/physrevb.33.847" @default.
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